http://uk.reuters.com/article/us-britain-eu-negotiations-idUKKBN17R1XJ
http://www.bertelsmann-stiftung.de/fileadmin/files/Projekte/Migration_fair_gestalten/IB_Study_MixedMigration2017_ENG.pdf
https://www.brookings.edu/blog/order-from-chaos/2023/01/06/refugees-must-be-central-to-the-reconstruction-of-ukraine/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=240704982&utm_source=hs_email
https://ukandeu.ac.uk/increased-immigration-from-non-eu-countries-not-just-a-british-phenomenon/